Mass and density of B-type asteroid (702) Alauda
Abstract
Observations with the adaptive optics system on the Very Large Telescope reveal that outer main belt asteroid (702) Alauda has a small satellite with primary to secondary diameter ratio of 56. The secondary revolves around the primary in 4.9143 0.007 days at a distance of 1227 24 km, yielding a total system mass of (6.057 0.36) × 1018 kg. Combined with an IRAS size measurement, our data yield a bulk density for this B-type asteroid of 1570 500 kg~m-3.
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